eclass-local-contextadmin

Removed a core change that slipped in from previous repository.
Updated two comments to be more clear they belong to this plugin
eclass-local-contextadmin

Core change, removed the visibility filter on sql statement to allow category level block control.
eclass-local-contextadmin

Fixed bug #778, activities and blocks not getting dimming class when not visible if lock enabled.
Fixed bug #777, code warning about uninitialized object.
eclass-local-contextadmin

Bumped required moodle version to 2.4: 2012120300.00
Merge branch 'DEV_240' into contextadmin_24_STABLE